brain stimulation

this day, a friend of mine told me to look for some dolphin music and tunes at youtube and let it be heard by my baby… as she said it will nourish my babies brain and stimulate as well… i was wondering why and how it will help my son’s brain activity when he is at his best bed time moment… ?? somehow, it ifs for my son’s welfare i will search for whatever it needs… but being a mom i wanted still to gather facts … for my satisfaction and peace of mind… i hope people here can share their thoughts with me… thank you

audz